Hetaoyuan Fm
Type Locality and Naming
The naming section is located in the vicinity of Yuhuangding to Dacangfang in the Liguanqiao basin, Henan. Named by the Petroleum Party of the Henan Bureau of Geology in 1960.
Lithology and Thickness
Primarily gray, grayish white, dark gray, grayish green and brownish red marlstone, mudstone and sandy mudstone with sandstone, conglomerate and oil shale, containing gypsum, trona and halite. The thickness is ~250–1500 m.
Relationships and Distribution
Lower contact
It has a conformable contact with the underlying Eocene Dacangfang Fm.
Upper contact
Regional extent
The formation is mainly distributed in the Liguanqiao, Nanyang, Wucheng and Pingchangguan basins, Henan Province, and also in Danjiang City, Hubei Province.
GeoJSON
Fossils
This formation is rich in fossils, containing the ostracods Cyprinotus preconcavus, C. formalis and Eucypris pengzhenensis and the charophytes Gyrogona qianjiangica, Maedlerisphaera chinensis and Grovesichara kielani; for vertebrates, besides turtles, there are at least over 15 species of mammals, of which the important ones are Lushilagus danzjiangensis, Miacis lushiensis and Sarkastodon henanensis and various species of tapirs such as Breviodon minutus, Schlosseria hetaoyuanensis and Lophialetes expeditus, as well as Protitan and Sianodon.
Age
Depositional setting
Additional Information